Plante & Moran, PLLC
Employee benefit plan audit practice profile, built from plan year 2024 Form 5500 filings.
Last updated · Source data: plan year 2024 Form 5500 filings
How many 401(k) plans does Plante & Moran, PLLC audit?
Plante & Moran, PLLC was the independent auditor for 1,182 retirement plan filings (1,217 audited filings including welfare plans) in plan year 2024, with clients in 45 states and territories — the #6 practice nationally by volume.
Practice at a glance
| Measure | Value |
|---|---|
| Firm EIN (as filed) | 33-1498605 |
| Retirement plan audits (401(k), 403(b), pension) | 1,182 |
| All audited filings (incl. welfare plans) | 1,217 |
| States and territories with clients | 45 |
| National rank by retirement plan volume | #6 of 3,956 |
| National rank, all audited filings (league-table basis) | #6 of 4,052 |
| Average client size (participants) | 1,896 |
| Largest client (participants) | 185,135 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
Where does Plante & Moran, PLLC audit plans?
| State | Plans audited | Share of practice |
|---|---|---|
| Michigan | 406 | 34.3% |
| Illinois | 206 | 17.4% |
| Colorado | 161 | 13.6% |
| Ohio | 149 | 12.6% |
| California | 25 | 2.1% |
| Texas | 23 | 1.9% |
| Indiana | 21 | 1.8% |
| Massachusetts | 16 | 1.4% |
| New Jersey | 16 | 1.4% |
| Pennsylvania | 16 | 1.4% |
| Wisconsin | 14 | 1.2% |
| Florida | 13 | 1.1% |
| North Carolina | 11 | 0.9% |
| Georgia | 9 | 0.8% |
| New York | 9 | 0.8% |
| Kentucky | 7 | 0.6% |
| Minnesota | 6 | 0.5% |
| South Carolina | 6 | 0.5% |
| Washington, D.C. | 5 | 0.4% |
| Maryland | 5 | 0.4% |
| Tennessee | 5 | 0.4% |
| Virginia | 5 | 0.4% |
| Wyoming | 5 | 0.4% |
| Kansas | 3 | 0.3% |
| Maine | 3 | 0.3% |
| Oregon | 3 | 0.3% |
| Utah | 3 | 0.3% |
| Washington | 3 | 0.3% |
| Arkansas | 2 | 0.2% |
| Arizona | 2 | 0.2% |
| Connecticut | 2 | 0.2% |
| Iowa | 2 | 0.2% |
| Missouri | 2 | 0.2% |
| Montana | 2 | 0.2% |
| Nebraska | 2 | 0.2% |
| Oklahoma | 2 | 0.2% |
| South Dakota | 2 | 0.2% |
| Vermont | 2 | 0.2% |
| Alaska | 1 | 0.1% |
| Alabama | 1 | 0.1% |
| Idaho | 1 | 0.1% |
| Mississippi | 1 | 0.1% |
| New Hampshire | 1 | 0.1% |
| Puerto Rico | 1 | 0.1% |
| West Virginia | 1 | 0.1% |
Largest concentration: Michigan (406 plans). State reflects the plan sponsor’s address, not the firm’s office locations.
What audit opinions does Plante & Moran, PLLC issue?
| Opinion type | Filings | Share |
|---|---|---|
| Unmodified (clean) | 1,141 | 96.6% |
| Qualified | 1 | 0.1% |
| Disclaimer | 39 | 3.3% |
| Adverse | 0 | 0.0% |
As coded on Schedule H. A disclaimer here usually reflects the legacy limited-scope reporting convention (now the ERISA Section 103(a)(3)(C) election), not a failed audit — see the methodology.
Largest plans audited by Plante & Moran, PLLC
| Plan sponsor | State | Participants |
|---|---|---|
| Kelly Services, Inc | MI | 185,135 |
| William Beaumont Hospital | MI | 49,582 |
| Firstgroup America, Inc. | OH | 46,872 |
| Essilorluxottica USA Inc | NY | 45,186 |
| Corewell Health | MI | 37,580 |
Comparing Plante & Moran, PLLC with other 401(k) audit firms?
See alternatives to Plante & Moran, PLLC for 401(k) audits: firms with comparable engagement volume and an overlapping state footprint, drawn from the same Form 5500 data.
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About this profile
This page is generated from public U.S. Department of Labor Form 5500 filings in which Plante & Moran, PLLC (EIN 33-1498605) is named as the plan’s independent qualified public accountant. Plante & Moran, PLLC did not supply, review, or endorse this information, and inclusion is not a recommendation. Filing data can contain sponsor-entered errors; corrections are welcome via the about page.